Maybe someone can post a pic of the headlight circuit for that type of headlight for us? I don't have access to wire diagrams until I get back to work on Monday.
Are they factory lights? Did you just replace the bulb or the ballast too? You definitely don't want to mess with those high voltage parts. I'm pretty sure the service manual test procedure is to just replace the parts because they don't want you fiddling with them.
You could swap parts to the other side and see if they work. If not, once we get a diagram we can go to another location for testing.